A swan sits at the center of a perfectly circular lake. At an edge of the lake stands a ravenous monster waiting to devour the swan. The monster can not enter the water, but it will run around the circumference of the lake to try to catch the swan as soon as it reaches the shore. The monster moves at 4 times the speed of the swan, and it will always move in the direction along the shore that brings it closer to the swan the quickest. Both the swan and the the monster can change directions in an instant.
The swan knows that if it can reach the lake's shore without the monster right on top of it, it can instantly escape into the surrounding forest.

How can the swan successfully escape?

What's the next in the series?

H, Be, F, S, Mn, Kr, In, Gd, Tl, ?

This is a classy optical illusion puzzle. What more you can find except bricks in the image below?

'Ferrari driver' easily beats the 'force driver' in a two-car race. How did Indian newspapers truthfully report so to look as a 'force drive' had outdone the 'Ferrari driver'? Think!!!

using four eights (8) and a one (1) and one mathematical symbol , create the number 100

I am lying and I always lie. Tell me whether I am lying or telling the truth.

If "P" means "-", "Q" means "/", "R" means "+", and "S" means "*" then find the value of the following:

21 Q 7 R 9 S 10 P 13

The more you take me, the more you leave me behind.
Who Am I?

Find The Next Number In The Sequence

30 10 15 13 0 16 -15 ?

Why is the Hole below a Lock?